Planter stand



FIG. 1 is a top perspective view of a planter stand showing my new design;

FIG. 2 is a side elevational view thereof, the adjacent and opposite sides being substantially similar in appearance;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a planter stand, as shown and described. 